9890001481 has 12 divisors (see below), whose sum is σ = 10569094812. Its totient is φ = 9221796864.

The previous prime is 9890001463. The next prime is 9890001491. The reversal of 9890001481 is 1841000989.

It can be written as a sum of positive squares in 6 ways, for example, as 4650558025 + 5239443456 = 68195^2 + 72384^2 .

It is not a de Polignac number, because 9890001481 - 2¹⁹ = 9889477193 is a prime.

It is a super-2 number, since 2×9890001481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9890001421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4357615 + ... + 4359883.

It is an arithmetic number, because the mean of its divisors is an integer number (880757901).

Almost surely, 2^9890001481 is an apocalyptic number.

It is an amenable number.

9890001481 is a deficient number, since it is larger than the sum of its proper divisors (679093331).

9890001481 is an equidigital number, since it uses as much as digits as its factorization.

9890001481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 9890001481 is about 99448.4865696809. The cubic root of 9890001481 is about 2146.5060598173.

The spelling of 9890001481 in words is "nine billion, eight hundred ninety million, one thousand, four hundred eighty-one".